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| Titel: |
Excretion of tetracycline and chlortetracycline in eggs after oral medication of laying hens |
| Auteur: |
Roudaut, B. Moretain, J. P. Boisseau, J. |
| Verschenen in: |
Food additives and contaminants. Pt. A, Chemistry, analysis, control, exposure & risk assessment |
| Paginering: | Jaargang 6 (1989) nr. 1 pagina's 71-78 |
| Jaar: |
1989-01 |
| Inhoud: |
After dosing laying hens orally with tetracycline (TC) through either drinking water (0.25 and 0.5 g/1 for 5 days) or feed (300 and 600 ppm for 7 days), and chlortetracycline (CTC) through feed (600 ppm) residues were determined by an agar plate diffusion technique in cylinders with Bacillus cereus as test-organism, separately for albumen and for yolk. The sensitivity threshold was 0.07 μg/g in albumen and 0.15 μg/g in yolk for TC and 0.01 μg/g in albumen and 0.06 μg/g in yolk for CTC. Drug excretion via egg was 3-fold higher for TC than for CTC. The drug was excreted preferentially into the yolk (about 75% of the total amount) and the elimination period lasted between 6 and 11 days for TC and 9 days for CTC, after treatment. Tetracycline use in laying hens is discussed, taking into consideration the proposals presented by the joint FAO/WHO Expert Committee on Food Additives. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 16 gevonden artikelen
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